Extraction of Sunspots from Chinese Sunspot Drawings Based on Semisupervised Learning

Extraction of Sunspots from Chinese Sunspot Drawings Based on Semisupervised Learning

China has six observing stations, providing over 52,000 handwritten sunspot drawings from 1947–2016. The observing stations are the Purple Mountain Astronomical Observatory (PMO), Yunnan Astronomical Observatory (YNAO), Qingdao Observatory Station (QDOS), Sheshan Observatory Station (SSOS), Beijing...

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Bibliographic Details
Main Authors: Qianqian Dong, Yunfei Yang, Song Feng, Wei Dai, Bo Liang, Jianping Xiong
Format: Article
Language:English
Published: IOP Publishing 2024-01-01
Series:The Astrophysical Journal
Subjects:
Sunspots
sunspot number
sunspot cycle
Neural networks
Online Access:https://doi.org/10.3847/1538-4357/ad4865

Internet

https://doi.org/10.3847/1538-4357/ad4865

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